Re: [RFC/RFT PATCH v3] sched: automated per tty task groups

[Markus Trippelsdorf]

On 2010.11.11 at 12:35 -0700, Mike Galbraith wrote:
> On Thu, 2010-11-11 at 20:15 +0100, Markus Trippelsdorf wrote:
> 
> > Just to add some data; here are the results from my machine (AMD 4
> > cores) running a -j4 kernel build, while I browsed the web:
> > 
> > 1) perf sched record sleep 30
> > 
> > without:
> > total_wakeups: 44306
> > avg_wakeup_latency (ns): 36784
> > min_wakeup_latency (ns): 0
> > max_wakeup_latency (ns): 9378852
> > 
> > with:
> > total_wakeups: 43836
> > avg_wakeup_latency (ns): 67607
> > min_wakeup_latency (ns): 0
> > max_wakeup_latency (ns): 8983036
> > 
> > 2) perf record -a -e sched:sched_switch -e sched:sched_wakeup sleep 10
> > 
> > without:
> > total_wakeups: 13195
> > avg_wakeup_latency (ns): 48484
> > min_wakeup_latency (ns): 0
> > max_wakeup_latency (ns): 8722497
> > 
> > with:
> > total_wakeups: 14106
> > avg_wakeup_latency (ns): 92532
> > min_wakeup_latency (ns): 20
> > max_wakeup_latency (ns): 5642393
> > 
> > So the avg_wakeup_latency nearly doubled with your patch, while the
> > max_wakeup_latency is lowered by a good amount.
> 
> When you say with/without, does that mean enabled/disabled, or
> patched/virgin and/or cgroups/nocgroups?

Patched/virgin and nocgroups
-- 
Markus
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